City police said Krystal Nichols has been located.
The 33-year-old was reported missing on Tuesday, but has since been found.
Sarnia police thank the public for their help in the matter.
OPP have closed Hwy. 402 westbound between Centre Road and Kerwood Road until Thursday morning to clean up the spill.
Lambton OPP are asking the public to help identify a driver who ran a stop sign and failed to remain at the scene of a crash in St. Clair Township.
In an email to Sarnia News Today, police said there were a few notable calls, including a disturbance in the area of Brock Street. and Cromwell Street.
Sarnia police have issued tickets to numerous motorists who were spotted driving past road closure signs on Lakeshore Road Wednesday afternoon.
Forecasters said isolated thunderstorms were expected to develop in the afternoon and track over the area.
The Sarnia Sting made two picks in Wednesday's Canadian Hockey League import draft.